Capacitated Multi-Item Inventory Systems with Random and Seasonally Fluctuating Demands: Implications for Postponement Strategies
Capacitated Multi-Item Inventory Systems with Random and Seasonally Fluctuating Demands: Implications for Postponement Strategies
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DOI：
10.1287/mnsc.47.4.512.9829
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发表时间：
2001-04
期刊：
影响因子：
--
通讯作者：
Yossi Aviv;A. Federgruen
中科院分区：
文献类型：
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作者：
Yossi Aviv;A. Federgruen
我们解决多项库存系统的随机和季节性波动，并可能相关的需求。这些产品分两个阶段生产，每个阶段都有自己的交货期;在第一阶段，生产共同的中间产品。第一阶段的生产量由给定的生产能力限制。我们开发了一个精确的下界和接近最优的启发式策略的简单结构。在一项广泛的数值研究中评估的它们之间的差距平均只有0.45%。我们使用该模型来研究各种延迟产品差异化（推迟）策略的好处，以及其他战略问题，包括（i）灵活与专用生产设施的好处;（ii）产能和库存投资之间的权衡;以及（iii）产能投资和服务水平之间的权衡。
We address multi-item inventory systems with random and seasonally fluctuating, and possibly correlated, demands. The items are produced in two stages, each with its own lead-time; in the first stage a common intermediate product is manufactured. The production volumes in the first stage are bounded by given capacity limits. We develop an accurate lower bound and close-to-optimal heuristic strategies of simple structure. The gap between them, evaluated in an extensive numerical study, is on average only 0.45%. We use the model to investigate the benefits of various delayed product differentiation (postponement) strategies, as well as other strategic questions, including (i) the benefits of flexible versus dedicated production facilities; (ii) the trade-off between capacity and inventory investments; and (iii) the trade-off between capacity investments and service levels.